Zinc toxicity alters the photosynthetic response of red alga Pyropia yezoensis to ocean acidification

Ma, Jing; Wang, Wen; Liu, Xiaoyan; Wang, Zhiqin; Gao, Guang; Li, Xinshu; Xu, Juntian

doi:10.1007/s11356-019-06872-7

Cited by 20 publications

(6 citation statements)

References 62 publications

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“…In this study, NPQ at pH 3.5 was higher than that of CK (Fig. 4A), which is consistent with the result of Liu et al (2020) that NPQ of U. prolifera was markedly higher at pH 4 than that of control. The thermal dissipation of light energy, referred to as NPQ, is the fastest and most flexible response towards excess light among the known photoprotection mechanisms (Goss and Lepetit 2015).…”

Section: Discussionsupporting

confidence: 91%

“…On the other hand, when the pH dropped to 3, Fv/Fm and ФPSII could not recover at all treatment durations. The possible reason is that U. prolifera is composed of monolayer cells, which is favorable for the entry of H + (Liu et al 2020). Gómez et al (2004) found that H + could cause photoinhibition and further affect the protein synthesis and degradation in PSII.…”

Section: Discussionmentioning

confidence: 99%

“…Gómez et al (2004) found that H + could cause photoinhibition and further affect the protein synthesis and degradation in PSII. Ma et al (2020) found that H + led to the degradation of PSII reaction center proteins D1, and reduced the ability to utilize light energy in red alga Pyropia yezoensis. In addition, some studies found that H + could destroy Rieske FeS protein and cytochrome (Cyt) f protein in Cyt b6f complex, further damage PSI, and reduce the photosynthetic activity of U. prolifera (Yamori et al 2011.…”

Section: Discussionmentioning

confidence: 99%

“…Nonphotochemical quenching (NPQ) is one of the most important mechanisms of protection against rapid and high light, by which the excess light energy can be dissipated in heat by a light-harvesting complex (LHC), thus preventing the overexcitation of photochemical reactions (Baker 2008). Liu et al (2020) exposed U. prolifera to acid (pH 4.0) and high light [1,200 µmol(photon) m -2 s -1 ] for 1 and 3 h and found NPQ values were higher than that of U. prolifera cultured under normal conditions. The result showed that acid treatment and the combined treatment of acid and high light could induce energy dissipation.…”

Section: Introductionmentioning

confidence: 99%

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Impacts of low pH and low salinity induced by acid rain on the photosynthetic activity of green tidal alga Ulva prolifera

Zhao¹,

Liu²,

Qin³

et al. 2021

Photosynt.

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Chl -chlorophyll; F0 -minimal fluorescence yield of the dark-adapted state; Fm -maximal fluorescence yield of the dark-adapted state; Fm' -maximal fluorescence yield of the light-adapted state; Fs -steady-state fluorescence yield; Fv/Fm -maximal quantum yield of PSII photochemistry; NPQ -nonphotochemical quenching; qE -energy-dependent quenching; RGR -relative growth rate; ROS -reactive oxygen species; ФPSII -effective quantum yield of PSII photochemistry.

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Section: Discussionsupporting

confidence: 91%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Impacts of low pH and low salinity induced by acid rain on the photosynthetic activity of green tidal alga Ulva prolifera

Zhao¹,

Liu²,

Qin³

et al. 2021

Photosynt.

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“…On the other hand, because of the high adaptability and rapid growth of S. horneri, it often becomes an invasive species (Sfriso and Facca, 2013), which affects the local marine ecosystem (van Tussenbroek et al, 2017;Byeon et al, 2019). Especially in recent years, the S. horneri golden tide which appeared in drifting population has been outbreak in the North Pacific Ocean many times, which has attracted more and more attention from all walks of life in the world (Ma et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Photosynthetic responses of a golden tide alga (Sargassum horneri) to ultraviolet radiation

Jiang

et al. 2022

Front. Mar. Sci.

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In recent years, massive Sargassum drifting on the sea surface, known as “golden tides,” negatively impacted on the local marine ecology. However, the physiological mechanisms of its formation remain unclear. To investigate the photosynthetic responses of golden tide algae to UVR, one key factor for drifting Sargassum population, we cultivated thalli of S. horneri, a golden tide alga, under three light treatments: P (photosynthetically active radiation, PAR), PA (PAR+UVA) and PAB (PAR+UVA+UVB) for 120 mins, followed by low light recovery for 240 mins. The photosynthetic characteristics of alga were determined. The results showed that UVR exposure decreased photosynthetic activity, reflected by depressed maximum photochemical quantum yield (Fv/Fm) and contents of Chla and Chlc in the PA and PAB treatments. Higher content of malondialdehyde (MDA) was found in thalli exposed to UVR, which verified the damage of UVR. Electron transfer rate (ETR) was slowed down by UVR, accompanied by the increments of net closing rate of the reaction center and the energy absorbed and dissipated by unit reaction center in PSII. In these effects on photosynthesis of UVR, the PAB treatment expressed more significant inhibition, indicating a remarkable role of UVB. However, based on our results, S. horneri also took some strategies to protect itself from photodamage of UVR. UVR exposure enhanced the contents of UV-absorbing compounds (UVACs) and carotenoid, and simultaneously expedited heat consumption of excess light energy, indicated by the increased non-photochemical quenching coefficient (NPQ) in the PA and PAB treatments. Increased activities of superoxide dismutase (SOD) and peroxidase (POD), and higher content of PsbA (D1) protein were found in the treatments with UVR, which suggested that antioxidant system and the turnover of D1 protein played important roles in protection from UV-induced damages. Due to the above protection pathways, Fv/Fm and ETR gradually recovered when thalli were transferred to low light recovery. Therefore, we suggest that various protection and restoration pathways in S. horneri work together to effectively protect against UVR damage, which may be the reason why drifting populations can adapt to UVR on the seawater surface and form golden tide in case of suitable temperature and nutrients.

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Seaweeds as Indicators and Potential Remediators of Metal Pollution

Jampílek

Kráľová

2021

Plant Growth-Promoting Microbes for Sustainable Biotic and Abiotic Stress Management

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Zinc toxicity alters the photosynthetic response of red alga Pyropia yezoensis to ocean acidification

Cited by 20 publications

References 62 publications

Impacts of low pH and low salinity induced by acid rain on the photosynthetic activity of green tidal alga Ulva prolifera

Impacts of low pH and low salinity induced by acid rain on the photosynthetic activity of green tidal alga Ulva prolifera

Photosynthetic responses of a golden tide alga (Sargassum horneri) to ultraviolet radiation

Seaweeds as Indicators and Potential Remediators of Metal Pollution

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